The downward trend in the return on capital and flat growth in the capital itself suggests that Leyard Optoelectronic could be a mature business experiencing little growth. The company's declining stock price also signals market concern over these trends.

Market maintains high valuation for the firm with a P/E of 49.78 amidst share price and EPS drop over 5 years, anticipating better future. Divergence in shareholder return and share price return could be due to dividend payments. Caution advised due to firm's long term performance.